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Olin [163]
3 years ago
15

A ball is whirled on the end of a string in a horizontal circle of radius R at a speed v. Complete the following statement: The

centripetal acceleration of the ball can be increased by a factor of 8 by ________.
Physics
2 answers:
JulijaS [17]3 years ago
7 0

Explanation:

When an object moves in a circular path, centripetal force acts on it. The magnitude of centripetal acceleration is given by formula :

a=\dfrac{v^2}{r}

Here,

v is the speed of the ball in circular path

r is the radius of circular path

The centripetal acceleration is inversely proportional to the radius of the circular path. To increase the centripetal acceleration by a factor of 8, the radius must decrease by a factor of 8 keeping speed constant.

ICE Princess25 [194]3 years ago
7 0

Answer:

Explanation:

The formula of the centripetal acceleration is given by

a=\frac{v^{2}}{R}

The centripetal acceleration is increased by 8 times, it means the velocity is doubled and the radius is halved.

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Darren drives to school in rush hour traffic and averages 28 mph. He returns home in mid-afternoon when there is less traffic an
Gala2k [10]

Answer:

distance between school and home is 21 miles

Explanation:

given data

in rush hour speed  s1 = 28 mph

less traffic speed s2 = 42 mph

time t = 1 hr 15 min = 1.25 hr

to find out

distance  d

solution

we consider here distance home to school is d and t1 time to reach at school

we get here distance equation when we go home to school that is

distance = 28 × t1    .......................1

and when we go school to home distance will be

distance = 42 × ( t - t1 )

distance = 42 × ( 1.25 - t1 )     ...................2

so from equation 1 and 2

28 × t1 = 42 × ( 1.25 - t1 )

t1 = 0.75

so

from equation 1

distance = 28 × t1

distance = 28 × 0.75

distance = 21 miles

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Why is it okay to have a radioactive alpha source in a smoke detector in your house?
egoroff_w [7]
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5 0
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Suppose that the weight (in pounds) of an airplane is a linear function of the amount of fuel (in gallons) in its tank. When car
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Answer:

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Explanation:

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